module ImageWgetErrors

# File lib/image_wget_errors.rb, line 12
def format_download_error(url:, reason:, trace: nil)
  lines = [
    IrcFormat.report_header(tag: "WGET", title: "download failed", style: STYLE_TITLE),
    reason.to_s.strip
  ]

  if trace&.any?
    lines << IrcFormat.divider("fetch trace")
    trace.each_with_index do |step, index|
      lines << format_trace_step(index + 1, step)
    end
  end

  footer = GoogleDriveUrl.google_drive_url?(url) ? "google drive" : "wget"
  lines << IrcFormat.report_footer(footer)
  lines.join("\n")
end

# File lib/image_wget_errors.rb, line 30
def format_trace_step(number, step)
  kind = step[:kind].to_s
  bytes = step[:bytes].to_i
  size_label = bytes.positive? ? "#{bytes} bytes" : "0 bytes"
  snippet = step[:snippet].to_s.strip
  host = trace_host(step[:url])
  detail = [host, kind, size_label]
  detail << snippet unless snippet.empty?
  "Step #{number} · #{detail.join(' · ')}"
end

# File lib/image_wget_errors.rb, line 41
def trace_host(url)
  uri = URI.parse(url.to_s)
  path = uri.path.to_s
  path = path[0, 24] if path.length > 24
  host = uri.host.to_s
  host = "#{host}#{path}" unless path.empty? || path == "/"
  host
rescue URI::InvalidURIError
  url.to_s[0, 48]
end